A gym member found a camera in the RecPlex locker room and called police. The investigation also revealed Landt placed cameras in the locker room at Uline.

There are at least 11 images of naked females; three of them are juveniles. Prosecutors said that Landt's videos were so vast, they would play for 880 days straight if strung end to end.

The criminal complaint said Wenckebach became a gym member in January and installed two small cameras inside various lockers and recorded people who were changing while she worked out.

She told police she did this at least 50 different times since January.

Authorities said Landt ordered Wenckebach to install the cameras after she lost a bet at work.

"Karl took my peace of mind away and replaced it with fear and anxiety," one victim said in court Friday. "I am fearful of locker rooms and bathroom situations."

Landt was originally charged with hundreds of charges, and prosecutors were seeking more than 40 years in prison. He was sentenced Friday to 12 years behind bars, with extended probation after his release.

"I'd just like to say how very sorry I am for all the actions I've taken that have brought us here today," Landt said in court.